CN216446883U - Fishing device for pipe without leaving well - Google Patents
Fishing device for pipe without leaving well Download PDFInfo
- Publication number
- CN216446883U CN216446883U CN202123100079.XU CN202123100079U CN216446883U CN 216446883 U CN216446883 U CN 216446883U CN 202123100079 U CN202123100079 U CN 202123100079U CN 216446883 U CN216446883 U CN 216446883U
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- fishing
- connector
- guide pipe
- pipe
- pipe column
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Abstract
The utility model discloses a fishing device for a guide pipe without leaving a well, which comprises a fishing pipe column connector, a safety joint, a guide pipe and a fishing mechanism, wherein the safety joint is provided with a safety upper joint and a safety lower joint; the safety joint is connected between the fishing pipe column connector and the fishing mechanism through the fishing mechanism connector; the safety joint and the fishing mechanism are both positioned in a guide pipe connected with the fishing pipe column connector. The utility model achieves the salvaging effect of the salvaging device with the guide pipe, and creates favorable conditions for the next treatment and construction while being convenient and efficient. The complexity of the pipe column after being salvaged and retained after being stuck when the pipe column falls into the well is greatly reduced, the difficulty degree of subsequent operation construction is greatly simplified, the operation cost is effectively reduced, and the operation period is shortened.
Description
Technical Field
The utility model belongs to a fishing tool for underground workover operation in the petroleum industry, in particular to a fishing device for a guide pipe without leaving a well.
Background
The fishing of dropped tubing strings in oil and gas wells is the most common downhole operation. When an oil and gas well bore with the diameter of more than 150mm is encountered, and the salvaged falling well pipe column consists of 27/8 'or 31/2' oil pipes, in order to ensure the reliability of the fishing tool for fishing the falling fish, a guide pipe needs to be welded at the upper joint of the fishing tool, so as to prevent the fishing tool from being inserted into an annular space formed by the oil and gas well bore and the falling well pipe column to cause downhole accidents or cause fishing operation failure. Although the above measures improve the fishing effect, the following secondary contradictions are also generated at the same time:
1. when a salvaged falling well pipe column meets the situation that the clamp cannot be lifted out or the buried clamp pipe column is not reversed and the salvage tool is withdrawn and loses efficacy, the pipe column can only be reversed and lifted out from a safety joint connected in the salvage pipe column above the salvage tool, and the salvage tool and the guide pipe are simultaneously left in the well.
2. The fishing tool and the guide pipe are simultaneously left in the well, so that great obstacles are brought to the next fishing and processing work, the cost of fishing operation is improved, and the operation period is prolonged.
Currently, fishing tools for drop strings are still in need of improvement.
Disclosure of Invention
The utility model aims to provide a fishing device with no guide pipe left in a well, which can prevent the guide pipe in the fishing device from leaving the well, reduce the complexity of subsequent treatment caused by the fact that a fishing tool welded with a large-diameter guide pipe is left in the well when a well falling pipe column is fished and blocked, reduce the huge operation cost caused by the complication, shorten the construction period of fishing operation and reduce the operation cost.
The technical solution of the utility model is as follows:
the utility model provides a fishing device that well was not stayed to stand pipe is including salvaging tubular column connector, safety joint, stand pipe and salvage mechanism, and safety joint is equipped with safe top connection and safe lower clutch, and safe top connection and safe lower clutch threaded connection, the lower extreme of stand pipe are the stand pipe, wherein:
the salvaging pipe column connector is connected with the guide pipe;
the safety joint is connected between the fishing pipe column connector and the fishing mechanism through the fishing mechanism connector;
the safety joint and the fishing mechanism are both positioned in a guide pipe connected with the fishing pipe column connector.
Preferably, the fishing pipe column connector is provided with a non-equal-diameter inner cavity and a non-equal-diameter outer circle, the upper portion of the non-equal-diameter inner cavity is a fishing pipe column connecting cavity and is provided with an internal thread to be connected with a fishing pipe column, a guide pipe connecting section and a safety joint connecting section are arranged in the non-equal-diameter outer circle, and external threads are arranged in the guide pipe connecting section and the safety joint connecting section and can be respectively connected with a guide pipe and a safety upper joint through threads.
Preferably, the inner diameter of the guide pipe connected with the guide pipe connecting section of the fishing pipe column connector is 10-15 mm larger than the maximum outer diameter of the lower part of the fishing pipe column connector, the safety connector and the fishing mechanism connector.
Preferably, a selectable water hole is formed in a thread-free section between the guide pipe connecting section and the safety joint connecting section, the selectable water hole is a hole communicated with a central hole of the fishing pipe column connector, a part, close to the outer wall of the fishing pipe column connector, of the selectable water hole is a plugging hole, and an internal thread is formed in the plugging hole and can be connected with a plug.
Preferably, a selectable water hole is formed in a thread-free section between the guide pipe connecting section and the safety joint connecting section, the selectable water hole is a hole communicated with a central hole of the fishing pipe column connector, the part, close to the outer wall of the fishing pipe column connector, of the selectable water hole is a plugging hole, and a thread section and a taper hole section are arranged in the hole of the plugging hole and can be in threaded connection with a plugging screw.
Preferably, the length of the guide pipe is 8 cm-25 cm greater than the sum of the length of the safety joint and the length of the fishing mechanism after the guide pipe is connected with the fishing pipe column connector.
Preferably, the guide head at the lower end of the guide tube is of a spiral shifting hook structure.
Preferably, the outer diameter of the lead is 6mm to 8mm smaller than the inner diameter of the casing or open hole section.
Compare with the fishing tool of current well tubular column that falls, the result of use that this device is showing lies in:
in the utility model, the safe upper joint is connected with the external thread of the drill rod of the fishing pipe column connector through the internal thread, the fishing mechanism is connected with the external thread of the safe lower joint through the internal thread of the fishing mechanism connector, and the safe joint and the fishing mechanism are both positioned in the guide pipe connected with the fishing pipe column connector.
According to the utility model, the safety joint in the salvaging pipe column connected above the salvaging tool is arranged in the salvaging device, if the salvaging well falling pipe column cannot be lifted out when being blocked, the back-off buried and blocked pipe column is invalid and the salvaging device cannot be withdrawn in the salvaging operation process, the salvaging operation pipe column can be rotated on the ground, the salvaging operation pipe column is separated from the safety joint in the salvaging device, and the salvaging operation pipe column is lifted out of the well together with the salvaging pipe column connector, the safety upper joint and the large-diameter guide pipe; only the small-diameter safety lower joint, the fishing mechanism connector and the fishing mechanism are reserved in the well.
The guide pipe in the fishing device does not remain in the well, thereby effectively reducing the subsequent treatment complication caused by the fact that the fishing tool welded with the large-diameter guide pipe stays in the well when the falling pipe column is fished and blocked and the huge operation cost brought by the complex treatment complication, obviously shortening the fishing operation period and reducing the operation cost.
The utility model achieves the salvaging effect of the salvaging device with the guide pipe, and creates favorable conditions for the next treatment and construction while being convenient and efficient. The problem that the salvage device with the guide pipe enters a well, a salvaged falling well pipe column cannot be lifted out or is lifted out when the pipe column meets a clamp, and the underground fault is complicated after the salvage device fails is solved, the complexity of the falling well pipe column salvage after the pipe column meets the clamp and the guide pipe is left in the well is greatly reduced, the difficulty degree of subsequent operation construction is greatly simplified, the operation cost is effectively reduced, and the operation period is shortened.
The utility model has simple structure, reasonable design and easy processing and manufacturing.
The utility model is particularly suitable for salvaging the well-falling pipe column in the deep well and the ultra-deep well, the reduction of the operation cost and the shortening of the construction period are particularly obvious, and besides salvaging the well-falling pipe column, the utility model also provides powerful technical support for salvaging the buried-blocked falling objects.
The utility model has obvious use effect and good popularization and application value and can obtain good economic benefit and social benefit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural view of the present invention.
In the figure: the fishing device comprises a fishing pipe column connector 1, an optional water hole 2, a plugging hole 21, a safe upper connector 3, a safe lower connector 4, a fishing mechanism connector 5, a guide pipe 6, a guide head 61 and a fishing mechanism 7.
Detailed Description
The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The utility model has the following embodiments:
referring to fig. 1, a fishing device that no well is stayed to guide tube includes salvage tubular column connector 1, safety joint, guide tube 6 and salvage mechanism 7, and safety joint is equipped with safe top connection 3 and safe lower clutch 4, and safe top connection 3 and safe lower clutch 4 threaded connection, the lower extreme of guide tube 6 are seeker 61, wherein:
the salvaging pipe column connector 1 is connected with a guide pipe 6;
the safety joint is connected between the fishing pipe column connector 1 and the fishing mechanism 7 through the fishing mechanism connector 5;
the safety joint and the fishing mechanism 7 are both positioned in a guide pipe 6 connected with the fishing pipe column connector 1.
In the utility model, the safe upper joint 3 is connected with the external thread of the drill rod of the fishing pipe column connector 1 through the internal thread, the fishing mechanism 7 is connected with the external thread of the safe lower joint 4 through the internal thread of the fishing mechanism connector 5, and the safe joint and the fishing mechanism 7 are both positioned in the guide pipe 6 connected with the fishing pipe column connector 1.
The safety joint connected above the conventional fishing device is connected inside the fishing device, so that when the fishing operation is blocked, a fished well pipe column cannot be lifted out when being blocked or can be lifted out when being backed up and the fishing device is withdrawn and fails, the safety joint can be reversely buckled from the safety upper joint 3 of the safety joint arranged inside the fishing device and lifted out together with the guide pipe 6, and only the safety lower joint 4 and the fishing mechanism 7 are left in the well. The device greatly reduces the subsequent fishing difficulty, effectively solves the problem of complicated underground faults caused by the fact that a large-diameter guide pipe in the fishing device stays in a well, is particularly suitable for being applied to deep wells and ultra-deep wells, can greatly reduce the operation cost, and has obvious use effect and application value.
On the basis of the first embodiment, the utility model also has the following embodiments:
further optimize, salvage tubular column connector 1 and be equipped with non-constant diameter inner chamber and non-constant diameter excircle the upper portion of non-constant diameter inner chamber is salvage tubular column connection chamber and is equipped with the internal thread and is connected with salvage tubular column be equipped with in the non-constant diameter excircle and draw pipe linkage segment and safe joint linkage segment all be equipped with the external screw thread in draw pipe linkage segment and the safe joint linkage segment and can respectively with draw 6 and the 3 threaded connection of safe top connection. The structure of the fishing pipe column connector 1 is further optimized by the embodiment.
Further optimizing, the inner diameter of the guide pipe 6 connected with the guide pipe connecting section of the fishing pipe column connector 1 is 10-15 mm larger than the maximum outer diameter of the lower part of the fishing pipe column connector 1, the safety connector and the fishing mechanism connector 5. In the embodiment, annular gaps are reserved between the lower parts of the guide pipe 6 and the fishing pipe column connector 1 and between the safety connector and the fishing mechanism connector 5, so that the fishing pipe column connector 1 can be conveniently pulled out together with the safety upper connector 3 and the guide pipe 6, and a channel is reserved for underground washing.
The optional water hole 2 in the utility model has two structures:
structure one of optional water hole 2
Optional water hole 2 is arranged in the unthreaded section between the guide pipe connecting section and the safety joint connecting section, the optional water hole 2 is a hole communicated with a central hole of the fishing pipe column connector 1, the part, close to the outer wall of the fishing pipe column connector 1, of the optional water hole 2 is a plugging hole 21, and an internal thread is arranged in the plugging hole 21 and can be connected with a plug. The embodiment determines that the optional water hole 2 is arranged in the unthreaded section between the guide pipe connecting section and the safety joint connecting section and the specific structure of the optional water hole 2. The device with the optional water holes 2 can determine whether the pipe plug is installed to close or open the optional water holes 2 according to specific construction requirements, so that the device has the function of flushing the tops of the fish in the fishing operation by one hydraulic power, and is more favorable for fishing the underground fallen objects.
Structure two of optional water hole 2
Optional water hole 2 is arranged in the unthreaded section between the guide pipe connecting section and the safety joint connecting section, the optional water hole 2 is a hole communicated with a central hole of a fishing pipe column connector 1, the part, close to the outer wall of the fishing pipe column connector 1, of the optional water hole 2 is a plugging hole 21, a threaded section and a taper hole section are arranged in the hole of the plugging hole 21, and the plugging hole can be in threaded connection with a plugging screw. The embodiment is another structure of the optional water hole 2, and the structure of the optional water hole 2 can be connected with the plugging screw. The device with the optional water holes 2 can determine whether the pipe plug is installed to close or open the optional water holes 2 according to specific construction requirements, so that the device has the function of flushing the tops of the fish in the fishing operation by one hydraulic power, and is more favorable for fishing the underground fallen objects.
Further optimization, the length of the guide pipe 6 is 8 cm-25 cm greater than the sum of the lengths of the safety joint and the fishing mechanism 7 after the safety joint is connected with the fishing pipe column connector 1, and the embodiment is more favorable for guiding a well-dropping pipe column into the device.
Preferably, the guide head 61 at the lower end of the guide tube 6 is of a spiral hook structure. The embodiment further determines the structure of the guide head 61, and when the guide pipe 6 of the embodiment is used, the falling pipe column in the well can be screwed into the guide pipe 6 more conveniently when the fishing pipe column is rotated on the ground, so that the fishing success rate is increased.
Further preferably, the outer diameter of the guide pipe 6 is 6 mm-8 mm smaller than the inner diameter of the casing or the open hole section, and the guide pipe 6 can be tightly attached to the inner wall of the casing or the open hole section when being lowered into the well, so that the well-falling pipe column can be fished easily.
The specific use method of the utility model is as follows:
1. the utility model is connected to the lower end of a salvaging pipe column and enters a well;
2. the drilling tool and the fishing device are slowly lowered while rotating at the beginning of 1-2 m away from the top of the fish, so that the fallen fish is pushed into the guide pipe 6 by the guide head 61 at the lower end of the guide pipe 6;
3. the drilling tool is continuously lowered, and when the hanging weight of the salvaging pipe column descends, the situation that the fish top reaches the position of the salvaging mechanism 7 in the device is described;
4. and (6) trying to lift the drilling tool, if the hanging weight is increased, indicating that the fish is fished, movably releasing the clamp to lift the drilling tool and fishing out the falling objects.
5. If the embedded-clamping falling objects cannot be successfully released, under the condition that the reversing and withdrawing device fails, the drilling tool is rotated in the loosening direction of the drilling tool, and the device connected with the salvaging pipe column is reversed from the safe upper joint 3 and the safe lower joint 4;
6. and (4) pulling out the drill, and taking the salvaging pipe column connector 1, the guide pipe 6 and the safe upper connector 3 out of the well together, wherein the safe lower connector 4 with the smaller outer diameter, the salvaging mechanism connector 5 and the salvaging mechanism 7 are only left in the well.
The utility model avoids the problem that the conventional fishing tool with the guide pipe leaves the guide pipe and the fishing tool in the well at the same time, and creates good conditions for treating the blocking accident in the well in the next step.
The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof. Any modification, equivalent replacement, improvement and the like made within the spirit and inventive concept of the present invention should be included in the protection scope of the present invention. The scope of protection is therefore not limited to the description above.
Claims (8)
1. The utility model provides a fishing device that well was not stayed to guide pipe, includes salvage tubular column connector, safety joint, guide pipe and salvage mechanism, and safety joint is equipped with safe top connection and safe lower clutch, and safe top connection and safe lower clutch threaded connection, the lower extreme of guide pipe are guide head, characterized by:
the salvaging pipe column connector is connected with the guide pipe;
the safety joint is connected between the fishing pipe column connector and the fishing mechanism through the fishing mechanism connector;
the safety joint and the fishing mechanism are both positioned in a guide pipe connected with the fishing pipe column connector.
2. The fishing device of claim 1, wherein the fishing pipe column connector is provided with a non-constant diameter inner cavity and a non-constant diameter outer circle, the upper part of the non-constant diameter inner cavity is a fishing pipe column connecting cavity and is provided with an internal thread to be connected with a fishing pipe column, the non-constant diameter outer circle is provided with a guide pipe connecting section and a safety joint connecting section, and the guide pipe connecting section and the safety joint connecting section are both provided with external threads and can be respectively in threaded connection with a guide pipe and a safety upper joint.
3. The fishing device of claim 2, wherein the inner diameter of the guide pipe connected with the guide pipe connecting section of the fishing pipe column connector is 10 mm-15 mm larger than the maximum outer diameter of the lower part of the fishing pipe column connector, the safety connector and the fishing mechanism connector.
4. The fishing device for leading pipes without leaving wells as claimed in claim 2, wherein a selectable water hole is arranged in the unthreaded section between the leading pipe connecting section and the safety joint connecting section, the selectable water hole is a hole communicated with the central hole of the fishing string connector, the part of the selectable water hole close to the outer wall of the fishing string connector is a plugging hole, and the plugging hole is internally provided with internal threads and can be connected with a plug.
5. The fishing device with no guide pipe left as well as described in claim 2, characterized in that the non-threaded section between the guide pipe connecting section and the safety joint connecting section is provided with an optional water hole, the optional water hole is a hole communicated with the central hole of the fishing pipe column connector, the part of the optional water hole close to the outer wall of the fishing pipe column connector is a plugging hole, and the inside of the plugging hole is provided with a threaded section and a taper hole section and can be in threaded connection with a plugging screw.
6. A lead-through fishing device as claimed in claim 1, 2 or 3, wherein the length of the lead is 8cm to 25cm greater than the sum of the lengths of the safety connector and the fishing mechanism after connection to the fishing string connector.
7. A lead-free fishing device as claimed in claim 6, wherein the guide head at the lower end of the lead is of a spiral hook structure.
8. A lead-free fishing device as claimed in claim 7, wherein the lead has an outer diameter of between 6mm and 8mm less than the inner diameter of the casing or open hole section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123100079.XU CN216446883U (en) | 2021-12-11 | 2021-12-11 | Fishing device for pipe without leaving well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123100079.XU CN216446883U (en) | 2021-12-11 | 2021-12-11 | Fishing device for pipe without leaving well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216446883U true CN216446883U (en) | 2022-05-06 |
Family
ID=81376320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123100079.XU Active CN216446883U (en) | 2021-12-11 | 2021-12-11 | Fishing device for pipe without leaving well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216446883U (en) |
-
2021
- 2021-12-11 CN CN202123100079.XU patent/CN216446883U/en active Active
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